For someone who is 71" in height, would you choose a medium sized bike (17.5") or a large size (19") according to the specs:

MD (17.5") -- height range 68.3–72.9"

LG (19") -- height range 71.3–75.8"


In general, is it better to go for a smaller size frame and if necessary just increase the stem length? Are there any advantages of choosing one size over the other in terms of ride performance?